i5 7600k OC dips

[8924th]

Hey there, second topic. This is more of a curiosity/worry thing as I only just recently noticed it happen, but i'm novice enough not to know what the reason could be.

So to get the hardware outta the way:

Motherboard: GIGABYTE Z270N-WIFI
CPU: Intel Core i5 7600K @ OC 4.5GHz @ 1.260-1.296V
Cooler: Cryorig H7

My testing bench in this case is OCCT. I was curious to see if my OC could go to 4.6GHz, and so I upped the multiplier to 46. With voltages on automatic and turbo boost disabled, it seemed to have no problems whatsoever.

Until I noticed OC dips as if the CPU momentarily turns off and then starts back up.

You can tell by the temperature dives before the test is turned off. The graph spans around 30 seconds I believe. At that point, the OC seems to dip to like 900MHz before climbing back up to 4.6GHz.

The temperatures are acceptable at a max of 85C considering this test type is meant to generate heat, and the voltages on this OC range from 1.272-1.304V from auto.

Do you guys believe this might be voltage related? Too much or too little to sustain it? Perhaps is it the motherboard cutting back because it only has 4+1 mosfets and it's not enough to supply stable voltage perhaps?

I really don't know of what to think. It seems to also happen now in my 4.5GHz OC although it's far less frequent. Doesn't seem to happen under normal usage outside of benchmarking either.

 

[DRagor]

Nope, as far as I know it's OCCT just works this way. Once per minute of two (more or less), it just relaxes CPU for few seconds, so both usage and temps go down. Had exactly same graphs on my stock 7500, so I don't think it's anything related to your OC.

 

[8924th]

Phew, so long as it's normal. I don't remember it ever doing that before so I was worried something was going wrong because a couple of weeks ago when I was braving the 4.4GHz i never noticed this happening.

On a slightly different yet related subject, what do you guys think of the thermals/voltages? Anything I should tweak? I know the CPU won't break if I OC too far, but it does worry me a bit to venture too far

Well aware the extra 100mhz won't be much of a difference but i'm really curious to know how far I can take it without hitting voltage instability on my chip. At 85C peak on core #2, I imagine the 4.7GHz would be closer to 88C.